I've done it and it works like a charm... involves special spray paint, chunk of window glass, water, and vinegar. (theletteredcottage.net)
Famous designers like Vivienne Westwood, Phillip Lim, Lanvin, Rick Owens and Ralph Lauren recommend us to draw attention to natural shades with the use of special sprays. (howomen.com)
That will be enough to make the noise go away for a while if it's a bad belt; don't waste your money on special sprays or lubes. (mechanics.stackexchange.com)